Metadata for probe compositions

It would be useful to have an overview file of compositions and their probes within them.
I suggest a JSON format like this:

"name": "comp1",
"probes":[
      [ "name": "h5s",
          "file": "the address",
           "regex": "H5S.*"],
       (more probes)],
"name": "comp2",
"probes":[
      [ "name": "h5S",
          "file": "the address",
           "regex": "H5S.*"],
       (more probes)]

